Alarm or call bell.



No. 69|,064. Patented 1an. I4, |902.

l J. 0. LIP-PINCOTT.

ALARM 0R -CALL BELL.

[Applicatiolg filed Sept. 13, 1901.)

(No Model.)

@a @z XW@ JESSE O. LIPPINCOTT, OF PHILADELPHIA, PENNSYLVANIA.

ALARM OR CALL BELL.

SPECIFECATION forming part of Letters Patent No. 691,064, dated January14, 1902. Application filed September 13, 1901. Serial No. 75,255. (Nomodel.)

To ctZZ whom t may concern:

Be it known that I, Jnssn O. LIPPINcorr, a citizen of the United States,residingin the city and county of Philadelphia,State of Pennsylvania,have invented a new and useful Improvement in Alarm or Call Bells, ofwhich the following is a speciiication.

My invention consists of an improvement in alarm or call bells that areadapted to be operated by the turning of the knob operating adoor-latch.`

My invention further consists in details of construction,aswillbehereinafterspecically described and claimed.

Figure l represents a sectional view of an alarm constructed inaccordance with my invention. Fig. 2 represents a sectional viewthereof, taken on the line a; @c of Fig. l. Fig. 3 represents a sectiontaken on the line y y of Fig. l. Figs. 4., 5, 6, and 7 represent detailviews of different portions of the device, which will be understoodinconnection with the following description.

Similar letters ot reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a portion of a door, and B alock of ordinary construction, the latch of which is operated by thespindle C in the usual manner.

D designates the knob on the outside of the door, while the knob on theinside of the door consists of a bell E and the casing F of a familiartype of bicycle-bell. On the inside of the door is suitably secured aplate G, Fig. 7, through which the spindle C passes. A collar or Washerl-I is provided with a reduced neck or end which enters the opening J inthe plate G and within which said spindle can turn freely. The bell ismounted upon the outer end of the spindle by means of the stem K andinto the ends of which the spindle C extends and is secured by a screw Min a familiar manner.

The casing F, forming part of the bell as a whole, is rigid with theouter end ot' the stem K, while projecting from the end of the stem is apin or reduced portion of said stem N, upon the outer end of which thebell proper, F., is screwed, as shown in Fig. l. The bellsoundingdevices consist of a train of gearsnamely, the gear P-mounted looselyupon the pin or reduced stem N, which lntermeshes with the pinion Q,that is rigid with the gearwheel Q', the latter intermeshiug with thepinion R, rigid with the gear R', while the latter intermeshes with thepinion S, rigid with the gear S'. The gears Q', R', and S' are lnountedupon the studs T, U, and V, carried by the casing F, and the rotatingbell-sounder (indicated as a whole by W) is mounted upon the pin or stemU and is provided with a pinion X, intermeshing with the gear S'.Surrounding the stem K is a sleeve Y, forming a post or support for thegear P, having an enlarged base Z, suitably recessed to inclose theplate G. The said sleeve is shown in detail in Fig. G and is provided atits outer end with iingers A', that extend through the slots B' in thecasing F, said fingers entering openings C' in the gear P and beingsuitably secured thereto.

Means are provided for holding the base Z and sleeve Y against rotationand for allowing it to rotate with the knob, a convenient means forsecuring this result being a springactuated detent D', mounted in asocket E', carried by the base Z, the spring-actuated detent beingnormally pressed inwardly toward the door to enter an opening F' in theplate G, while by means of a pin G', carried by the detent, the lattercan be withdrawn from engagement with the opening F' in a familiarmanner.

The operation is as follows: When the parts are in the position shown inFig. l, when either ot the knobs are turned the bell will be rungbecause the detent D' prevents the base Z and sleeve Y from turning, andconsequently when the spindle C is turned the train of gears Q', R', andS', with their pinions, are rotated around the gear P, which is heldagainst rotation by reason of the fact that it is secured to the end ofthe sleeve Y. This will cause the rapid rotation of the sounding deviceW and the ringing of the bell. When, however, the detent D'is withdrawnfrom the opening F of the plate, the sleeve is free to rotate, and whenthe spindle is turned by either knob the said sleeve with its gear Protate also, and consequently the bell is not sounded.

The uses to which this alarm and call bell can be put are of courseobvious, although it might be well to mention the fact that it can IOObe placed upon the doors of flats, apartments, front doors of dwellings,and, in fact,upon any other place Where it is desired to have an alarmor call bell, although it will be found especially useful as an alarmfor protection against thieves, since the mere fact of turning the knobto iind Whether the door is locked will sound the alarm.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. The combination with the spindle of a door-latch, of a bell securedto one end thereof and provided With a knob therefor, a sounding deviceconnected with the train of gears mounted upon and carried by said bell,a support, said spindle and support being relatively rotatable, a gearrigidly mounted upon said su pport and interineshing with said train ofgears, and devices for preventing the rotation of said support, handleand the gear carried thereby, so that the sounding devices will beoperated by turning the spindle.

2. The combination with the spindle of a door-latch, of a bell securedto one end there- 3. The combination with a spindle of a doorlatch, of abell secured to one end thereof, sounding devices and gearing foroperating the same carried by said bell, a gear intermeshing with saidgearing, a sleeve surrounding said stern and carrying said gear, andmeans for preventing the rotation of said sleeve whereby when the sleeveis held against rotation the bell will be sounded upon the turning ofthe spindle.

4. The combination With a spindle of a doorlatch, of a bell secured toone end thereof, sounding devices connected With a train of gearscarried by said bell, a gear intermeshing with one of said train ofgears, a post or support for said gear, and a detent carried byV saidpost or support adapted to engage a stationary part and prevent therotation thereof.

5. The combination with a spindle of a doorlatch, of `a bell secured toone end thereof and having a sounding device, a train of gears foroperating the same, a gear intermeshing with socket upon the door.

JESSE O. LIPPINCOTT.

Witnesses:

JOHN A. WIEDERSHEIM, GLENN MEnEDIrH.

